diff --git a/thermion_dart/lib/thermion_dart/viewer/shared_types/entities.dart b/thermion_dart/lib/thermion_dart/viewer/shared_types/entities.dart
index b59631ac..0de51188 100644
--- a/thermion_dart/lib/thermion_dart/viewer/shared_types/entities.dart
+++ b/thermion_dart/lib/thermion_dart/viewer/shared_types/entities.dart
@@ -8,6 +8,4 @@ export 'light_options.dart';
 // a handle that can be safely passed back to the rendering layer to manipulate an Entity
 typedef ThermionEntity = int;
 
-abstract class ThermionTexture {
-  
-}
+
diff --git a/thermion_dart/lib/thermion_dart/viewer/shared_types/geometry.dart b/thermion_dart/lib/thermion_dart/viewer/shared_types/geometry.dart
index 076b36c4..3417253e 100644
--- a/thermion_dart/lib/thermion_dart/viewer/shared_types/geometry.dart
+++ b/thermion_dart/lib/thermion_dart/viewer/shared_types/geometry.dart
@@ -8,7 +8,6 @@ class Geometry {
   final Float32List normals;
   final Float32List uvs;
   final PrimitiveType primitiveType;
-  final String? materialPath;
 
   Geometry(
     this.vertices,
@@ -16,7 +15,6 @@ class Geometry {
     Float32List? normals,
     Float32List? uvs,
     this.primitiveType = PrimitiveType.TRIANGLES,
-    this.materialPath,
   })  : indices = Uint16List.fromList(indices),
         normals = normals ?? Float32List(0),
         uvs = uvs ?? Float32List(0) {
diff --git a/thermion_dart/lib/thermion_dart/viewer/shared_types/light_options.dart b/thermion_dart/lib/thermion_dart/viewer/shared_types/light_options.dart
index 1bbe3c84..09e5a1ee 100644
--- a/thermion_dart/lib/thermion_dart/viewer/shared_types/light_options.dart
+++ b/thermion_dart/lib/thermion_dart/viewer/shared_types/light_options.dart
@@ -53,4 +53,24 @@ DirectLight.point({
   direction: Vector3.zero(),
   falloffRadius: falloffRadius,
 );
+
+DirectLight.sun({
+  double color = 6500,
+  double intensity = 100000,
+  bool castShadows = true,
+  Vector3? direction,
+  double sunAngularRadius = 0.545,
+  double sunHaloSize = 10.0,
+  double sunHaloFalloff = 80.0,
+}) : this(
+  type: LightType.DIRECTIONAL,
+  color: color,
+  intensity: intensity,
+  castShadows: castShadows,
+  position: Vector3(0, 0, 0),  
+  direction: direction ?? Vector3(0, -1, 0),
+  sunAngularRadius: sunAngularRadius,
+  sunHaloSize: sunHaloSize,
+  sunHaloFallof: sunHaloFalloff,
+);
 }
diff --git a/thermion_dart/lib/thermion_dart/viewer/shared_types/material.dart b/thermion_dart/lib/thermion_dart/viewer/shared_types/material.dart
new file mode 100644
index 00000000..fad70382
--- /dev/null
+++ b/thermion_dart/lib/thermion_dart/viewer/shared_types/material.dart
@@ -0,0 +1,9 @@
+abstract class MaterialInstance {
+  
+}
+
+enum AlphaMode {
+    OPAQUE,
+    MASK,
+    BLEND
+}
\ No newline at end of file
diff --git a/thermion_dart/lib/thermion_dart/viewer/shared_types/shared_types.dart b/thermion_dart/lib/thermion_dart/viewer/shared_types/shared_types.dart
index c41d441e..ed30b00b 100644
--- a/thermion_dart/lib/thermion_dart/viewer/shared_types/shared_types.dart
+++ b/thermion_dart/lib/thermion_dart/viewer/shared_types/shared_types.dart
@@ -1,5 +1,7 @@
 library shared_types;
 
+export 'material.dart';
+export 'texture.dart';
 export 'entities.dart';
 export 'light.dart';
 export 'shadow.dart';
diff --git a/thermion_dart/lib/thermion_dart/viewer/shared_types/texture.dart b/thermion_dart/lib/thermion_dart/viewer/shared_types/texture.dart
new file mode 100644
index 00000000..1279e39d
--- /dev/null
+++ b/thermion_dart/lib/thermion_dart/viewer/shared_types/texture.dart
@@ -0,0 +1,3 @@
+abstract class ThermionTexture {
+  
+}
\ No newline at end of file